middle school work

H 2 and O 2 are bubbled through a porous carbon rod into concentrated NaOH. Catalysts are present in the electrodes. ..

When a current is passed through the coil in the direction PQRS, then the coil experiences a torque t = NIBA sin a Since the magnified field is radial the plane of the coil is parallel to the magnetic field such that a = 90 o and hence t = NIBA. The coil rotates and the phosphor bronz..

The transference of energy may take place as work if the system and surroundings have different pressures. For e.g., suppose a gaseous system is enclosed in a cylinder fitted with a movable piston. If pressure of the system is higher, the piston will be pushed up until the pressure of th..

The ray diagram given below gives the principle of a compound microscope. The object is mounted on the stand below the microscope tube. The objective lens forms a real, inverted and magnified image (I 1 ) of the object. The image I 1 acts as an object for the eye piece. The position of the eyepiece..

. According to equation of motion v 2 = v 0 2 + 2 a x d ______(2) Substituting (1) in (2), we get Hence, the work done by the force on the ball is equal to the energy transfer. Work done due to the force is W = F x d. Therefore, to calculate work, we have to use only t..

and when q is obtuse, cos q is negative. Hence, the work done is negative. ..

In 1798, Count Rumford observed that the amount of heat produced is proportional to the amount of mechanical work done. Later, Dr. James Prescott Joule of Manchester, established a definite relation between the work done and the heat produced. It was shown that when a certain am..

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Problems on Simultaneous Equations - If one number is thrice the other and their sum is 60, find the numbers. Let the numbers be x and y. x is 3 times y x = 3y (1) Sum of x and y is 60 x + y = 60 (2) Putting the value of x from (1) in (2), we get, 3y + y = 60 4y = 60 y = 15 Substituting y = 15 in (..

(1) Let be rational function. If is improper, divide P(x) by Q(x). Let T(x) be the quotient and P 1 (x) be the remainder, then Where T(x) is a polynomial and is a proper rational function. (2) Resolve the proper rational function in to partial fractions. (3) Write as sum of partial fractions. (4) W..